John siegel



UNITED STATES PATENT OF ICE.

JOHN SIEGEL, OF MONTREAL, CANADA.

PENClL-SHARPENER.

SPECIFICATION forming part of Letters Patent No. 474,418, dated May 10,1892.

Application filed January 21, 1892. Serial No,418,840%. (No model.)

T on whom it may concern:

Be it known that I, JOHN SIEGEL, of the city of Montreal, in theProvince of Quebec, in the Dominion of Canada, have invented certain newand useful Improvements in Pencil-Sharpeners or Pointing-Planes; and Ido hereby declare that the following is a full,

. clear, and exact description of the same, reference being had to theaccompanying drawings, forming a part hereof.

My invention, which will be hereinafter fully set forth and claimed,relates to machines for sharpening pencils or planing similar objects toa point.

The object of my invention is a miniature planing-machine, in which apencil or similar article is held mechanically at an angle, which may bevaried and automatically rotated While being subjected to the operationof a guided plane, so as to produce a point of any desired finenesswithout soiling the fingers.

Figure 1 is a top view of my improved machine, showing the pencil inposition. Fig. 2 is a side elevation of the same, parts being broken outto show the angle-adj u sting mechanism. Fig. 3 is a longitudinalvertical section of the same on line :0 00, Fig. 1. Fig. 4 is atransverse section of the same on line y y, Figs. 1 and 3, showing thechuck turning mechanism. Fig. 5 is a transverse section of the same online a 2, Figs. 1 and 3, showing the chuck-locking mechanism. Fig. 6 isa transverse section of the same on line z ,2, Figs. 1 and 3, showingthe mechanism for varying the angle or length of the point to be planed.Fig. 7 is a transverse section of the same on line 2 2', Figs. 1 and 3.Fig. Sis a longitudinal section of the plane, the dotted lines showingthe waste-guard turned up.

On the top of a bed-frame or box A, which may have any desired shape oroutline, I form a slide bed race or track a for a small plane,consisting of a longitudinal gap or slot in the top, preferably parallelto and at one side of said bed, if rectangular. The edges of said raceare grooved to form a guide a for the plane.

13, Figs. 1, 2, 6, and 8, is a plane adapted to run in the race ca,having its sides prepared to run in the guides at. It is provided with acutting-bit B, adjustably secured to the beveled body by a set-screw B,and also with a hinged cover or waste-guard B for the cutter to preventthe flying of waste and shavings and to force them to drop in theinterior of the box or bed. Near one end of the track and. across it isj ournaled acrank-shaft C, Figs. 1 and 2, having crankc, which isconnected by a pitman B to the plane B, said shaft having mounted uponit at one end a fly-wheel O, with handle 0', and at the other aface-ca1n G".

D, Figs. 3, 4, and 5, is a chuck consisting of a tube or barrel of suchinternal diameter as to be capable of holding the thickest pencil orother object P for which the machine is to be used. A number of wideslits (Z are made in it extending from one end to within a shortdistance of the other, and the external diameter of the tube at the slitend is made larger to the extent of the Width of the slits, taperingdown to the normal diameter at the solid end, so that when the split endis. com pressed in such manner that all the slits are closed at the freeend the tube forms a cylinderi. (2., its external diameter is uniform.The solid end d of said tube is journaled in the beveled end 0. belowthe level of the top, said end forming a recess in the bed or boxopposite the crank-shaft C at such an angle with the horizontal and withthe plane-track that the center line intersects the plane-bit when nearthe end of its track near its farthest side, as indicated by thepencil-point in Figs. 1, 2, and 3. Said tube is journaled yieldingly topermit of its angle being varied by raising or depressing the other orfree end. Upon the end d of the tube projecting from the journal aratchet-wheelD is mounted, so as to be capable of turning it, andbetween the journal end and the ratchet is journaled upon said tube-necka rocker D", carrying a pawl d, gearing in said ratchet, anupwardprojecting finger being pressed into contact with the cam O on thecrank-shaft by aspring D Figs. 3 and 4, operating against adownward-projecting finger, Fig. 4. The ratchet- Wheel is inclosed by atrumpet-mouthed cover D secured to the end a, it being provided withslots d at the top and bottom for the fingers of the rocker D". Acircularly-grooved collar E, Figs. 3 and-5, is adapted to slide upon thechuck-tube snugly, compressing it when near the free end. Said collarmaybe moved forward and backward on the tube by means of a lever E,pivoted upon a cross-bar or fulcrum e below, and projecting through aslot 01/ in the top of the bed, screws or pins 6 engaging the groove ofthe collar.

F is a grooved pulley journaled upon an axle F, disposed at a rightangle to the vertical plane which passes through the center line of thechuck D and at such a height that the free end of the pencil or otherobject P inserted in the chuck will rest in the groove of said pulleyand find arigid support on said pulley while the plane is operating uponit. The bar F has one end secured in the side of the box or bed, and theother is provided with a threaded eye f, through which passes a screwF", having its lower end journaled in a ledge or bracket f and its upperend in the top of the bed, the end projecting above it being providedwith a milled head f".

Between the end of the chuck and the pulley is placed a spring G, Figs.3 and 7, secured to the box or bed and so disposed that it will stand ata right angle to the pencil or other object and press upon the samedownwardly. The bed or boxA may be secured upon abase A, if desired, asshown in Figs. 2 and 3, a beingrubber feet.

The machine operates as follows: The chuck D is opened by drawing thelever E back from the position shown in Figs. 1, 2, and 3, thus movingthe collar E toward the box end or journal and allowing the lips of thechuck to expand and open out. The pencil or other object P to beoperated upon is then inserted through the mouth of the cover D into thechuck D,pushed along under the spring G, and into the groove upon thepulley F until its end is even with one of the marks m, which aremade-upon the top of the bed for convenience of adjustment. The pencilis now clamped into the chuck by pushing the lever E forward, thusmoving the collar E nearer the split end and compressing it. The milledheadf" is now turned to the right or left, according to whether it isdesired to raise or depress the end of the object and to have the pointshorter or longer. The crank-shaft C is now rotated by means of thehandle 0 on the fly-wheel O, and the plane B is thereby given areciprocating movement, at each forward stroke of which it takes a cutofi the elevated end of the object P. During the return stroke the cam Cpushes the upper projecting end of the rocker D outward,

thus turning the chuck D and object P to the extent of one tooth of theratchet-wheel D, the pawl d" slipping over one tooth of theratchet-wheel back as soon as the pressure of the cam on the upper endof the rocker ceases, and the spring D pushes the lower end of therocker in the other direction and the upper end against the cam, thuspresenting a new operating-surface to the plane-bit at each stroke untilthe chuck has made a complete revolution. The box form of frame or bedanswers the purpose'of a receptacle for shavings and waste, thewaste-guard B preventing the latter from flying. The plane, beingoblique to the object upon which it operates, prevents the former'beingblunted too rapidly in one place, as thus the whole width of the bit isbrought into operation; but it is essential in making a fine point on apencil, which breaks in the operation of cutting if plane and pencil areparallel.

I claim as my invention- 1. The combination of a bed-frame or box, aplane guided in a track on the top of said bed, a crank-shaft j onrnaled on the top of said bed near the end at the heel of said plane andprovided with means of turning it and connected to the plane by apitman, a rotary chuck having one end journaled yieldingly in the bedend opposite said crank-shaft, so that its free end and center lineslopes upward and laterally and the latter intersects the plane-track atan acute angle near its far. end and side at the level of thecutting-edge of the plane-bit, said free end being elastic and tapering,a sliding locking-collar on said free elastic end, mechanism for slidingsaid collar, mechanism for rotating said chuck, an adjustable supportfor the end of the object projecting from the chuck, and a springpressing it downward, substantially as set forth.

2. In a pencil-sharpener or pointing-plane, the combination of a bed A,having a race or track a, with guides or, adapted to guide a plane, aplane-bodyB, adapted to run in said guides, a cutting-bit B, held onsaid body adjustably by a screw B, and waste-guard B, hinged to saidbody, substantially as set forth.

3. In a pencil-sharpener or pointing-plane, the combination of a bed A,having an open race or track a, a plane B, guided in said race andprovided with adjustable bit B and hinged waste-guard B a crank-shaft O,journaled across said track near one end thereof, a pitman B connectingsaid plane with the. crank, a fiy-wheel C on said shaft, and handle a onsaid fly-wheel, substantially as set forth.

4. The combination of a bed or box A, having at one end a beveled recesswith end a", with an elastic tubular chuck D, journaled yieldingly insaid end and diagonally insaid bed, so that its center line forms anacute angle with the top surface of the bed, its free end slit open andtapering indiameter, the sliding collar E on the tapering split portionhavinga circular groove, and the lever E, pivoted below said collar andprojecting through a slot in the top and engaging the groove of thecollar, substantially as set forth.

5. The combination of abed or box A, having in its top a race or tracka, and a chuck D, having one end journaled below the level of said trackat one end of said bed and having its other end projecting into said bedor box at a line rising and deviating laterally, so as to intersect saidtrack at the opposite end at an acute angle, substantially as set forth.

6. The combination of a bed or. box A, a race or track a in the top ofthe same, a recess with beveled end a" normal to a line intersecting theopposite end and side of said track at an acute angle in an upward andlateral direction, and a tubular and flexible chuck D, journaledyieldingly in said end and taking said line as a center, substantiallyas set forth.

7. The combination of a bed or box A, having in its top a race or tracka, a tubular flexible chuck D, journaled below said top at one end ofsaid bed and projecting into said bed, so that its center lineintersects the race a at an acute angle, a sliding collar E on saidchuck, the lever E, pivoted upon the axle c and connected to the collarby screws e, a grooved pulley F, normal to the line of said chuck andnear the end of the line, the bar F, upon which said pulley isjournaled, having a threaded eye f a screw F", journaled in the bed-topand passing through the eye f and provided with a milled head f", andthe spring G between the end of the chuckD and the pulley F,substantially as set forth.

8. The combination of a bed or box A, having in its top a race or tracka,atubular flexible chuck D, journaled in the recessed and beveled end0t" of said bed and below the top, so that its center line intersectssaid track at an acute angle, a ratchet-wheel D, mounted near the end ofsaid chuck, a rocker D, journaled upon said chuck between its bearingand the ratchet-Wheel and having arms projecting above and below, thepawl c", pivoted on said rocker and gearing in the ratchet-wheel, thespring D, pressing against the lower arm of said rocker, the face-cam C"at the end of a crank-shaft, against which the end of the upper arm ofthe rocker is pressed by said spring, the crank-shaft O, journaledacross the track at, opposite said rocker and having said cam mountedupon its end, and the trumpet-mouthed cover D inclosing saidratchet-wheel, substantially as set forth.

9. The combination of the box A, having an open track a in its top andhaving one corner recessed by a beveled end a, said box forming areceptacle for waste, a plane B, provided with adjustable bit and havinga hinged waste-guard 13 running on said track, a crank-shaft O,journaled across the track, a fly-wheel O on said shaft provided withhandle c, a pitman B connecting the crank and plane, a cam O on the endof said shaft, a chuck D, journaled in the end a below the top of theybed and having mounted upon ita ratchet-wheel and journalod upon it arocker operated by said cam and a spring and carrying a pawl gearing insaid ratchet-wheel, substantially as set forth.

In testimony whereof I have signed in the presence of the undersignedWitnesses:

JOHN SIEGElL. Witnesses:

ANGUS MOOALLUM, J. V. SHOEMAKER.

